MAYO JASON

From: LO KELVIN

Sent: Friday, March 13, 2026 10:37 AM

To: MAYO JASON

Subject: FW: Spot Sampling for OMC1 Training Room
Categories: Yellow category

Hello Jason,

Never It is Jan 23 that | did the spot check.
Thanks,

KELVIN LO

Railway Safety Specialist
Railway Safety and Security
P: 604-218-0128

E: kelvin lo@bertc.bc.ca

BC Rapid Transit Company (BCRTC)
6800 14th Ave, Burnaby, BC V3N 487, Canada

T Together all the way

From: WAINWRIGHT RON <RON_WAINWRIGHT@bcrtc.bc.ca>
Sent: January 23, 2026 1:39 PM

To: LO KELVIN <KELVIN_LO@BCRTC.BC.CA>

Subject: Re: Spot Sampling for OMC1 Training Room

Thanks Kelvin

From: LO KELVIN <KELVIN LO@BCRTC.BC.CA>

Sent: January 23, 2026 10:36

To: WAINWRIGHT RON <RON_ WAINWRIGHT @bertc.bc.ca>
Cc: TENG ELIOT <ELIOT TENG@BCRTC.BC.CA>

Subject: Spot Sampling for OMC1 Training Room

Hello Ron,

Thanks for reaching out to us regarding the noise at the training room produced by the 2 servers behind the
workstation.

At the time of spot sampling today, at around 07:40-45 we got values between 56 - 63 dBA (depending how close
we got to the server rack)
e This value was below the occupational exposure limit of 85 dBA — TWA (8-hours), although we did not
measure for 8 hours, we are assuming the noise does not fluctuate much.

1
000115